view src/gb/gbSound.cpp @ 556:6e6b7961595b

created scaffold for displaying terminal characters.
author Robert McIntyre <rlm@mit.edu>
date Fri, 31 Aug 2012 01:48:31 -0500
parents fa7676dbf6f2
children
line wrap: on
line source
1 #ifdef WIN32
2 # include "../win32/stdafx.h"
3 # include "../win32/VBA.h"
4 #endif
6 #include <cstring>
7 #include <cassert>
8 #include <stdio.h>
10 #include "../common/System.h"
11 #include "../common/Util.h"
12 //#include "../Blip_Buffer.h"
13 #include "gbGlobals.h"
14 #include "gbSound.h"
16 #ifndef countof
17 #define countof(a) (sizeof(a) / sizeof(a[0]))
18 #endif
20 extern u8 soundBuffer[6][735];
21 extern u16 soundFinalWave[1470];
22 extern u16 soundFrameSound[735 * 30 * 2];
23 extern int32 soundVolume;
25 soundtick_t GB_USE_TICKS_AS = 24; // (1048576.0/44100.0); // FIXME: (4194304.0/70224.0)(fps) vs 60.0fps?
27 #define SOUND_MAGIC 0x60000000
28 #define SOUND_MAGIC_2 0x30000000
29 #define NOISE_MAGIC (2097152.0 / 44100.0)
31 extern int32 speed;
33 extern u8 soundWavePattern[4][32];
35 extern u32 soundBufferLen;
36 extern u32 soundBufferTotalLen;
37 extern int32 soundQuality;
38 extern int32 soundPaused;
39 extern int32 soundPlay;
40 extern soundtick_t soundTicks;
41 extern soundtick_t SOUND_CLOCK_TICKS;
42 extern u32 soundNextPosition;
44 extern int32 soundLevel1;
45 extern int32 soundLevel2;
46 extern int32 soundBalance;
47 extern int32 soundMasterOn;
48 extern u32 soundIndex;
49 extern u32 soundBufferIndex;
50 extern int32 soundFrameSoundWritten;
51 int32 soundVIN = 0;
52 extern int32 soundDebug;
54 extern int32 sound1On;
55 extern int32 sound1ATL;
56 extern int32 sound1Skip;
57 extern int32 sound1Index;
58 extern int32 sound1Continue;
59 extern int32 sound1EnvelopeVolume;
60 extern int32 sound1EnvelopeATL;
61 extern int32 sound1EnvelopeUpDown;
62 extern int32 sound1EnvelopeATLReload;
63 extern int32 sound1SweepATL;
64 extern int32 sound1SweepATLReload;
65 extern int32 sound1SweepSteps;
66 extern int32 sound1SweepUpDown;
67 extern int32 sound1SweepStep;
68 extern u8 * sound1Wave;
70 extern int32 sound2On;
71 extern int32 sound2ATL;
72 extern int32 sound2Skip;
73 extern int32 sound2Index;
74 extern int32 sound2Continue;
75 extern int32 sound2EnvelopeVolume;
76 extern int32 sound2EnvelopeATL;
77 extern int32 sound2EnvelopeUpDown;
78 extern int32 sound2EnvelopeATLReload;
79 extern u8 * sound2Wave;
81 extern int32 sound3On;
82 extern int32 sound3ATL;
83 extern int32 sound3Skip;
84 extern int32 sound3Index;
85 extern int32 sound3Continue;
86 extern int32 sound3OutputLevel;
87 extern int32 sound3Last;
89 extern int32 sound4On;
90 extern int32 sound4Clock;
91 extern int32 sound4ATL;
92 extern int32 sound4Skip;
93 extern int32 sound4Index;
94 extern int32 sound4ShiftRight;
95 extern int32 sound4ShiftSkip;
96 extern int32 sound4ShiftIndex;
97 extern int32 sound4NSteps;
98 extern int32 sound4CountDown;
99 extern int32 sound4Continue;
100 extern int32 sound4EnvelopeVolume;
101 extern int32 sound4EnvelopeATL;
102 extern int32 sound4EnvelopeUpDown;
103 extern int32 sound4EnvelopeATLReload;
105 extern int32 soundEnableFlag;
106 extern int32 soundMutedFlag;
108 extern int32 soundFreqRatio[8];
109 extern int32 soundShiftClock[16];
111 extern s16 soundFilter[4000];
112 extern s16 soundLeft[5];
113 extern s16 soundRight[5];
114 extern int32 soundEchoIndex;
115 extern bool8 soundEcho;
116 extern bool8 soundLowPass;
117 extern bool8 soundReverse;
118 extern bool8 soundOffFlag;
120 bool8 gbDigitalSound = false;
122 void gbSoundEvent(register u16 address, register int data)
123 {
124 int freq = 0;
126 gbMemory[address] = data;
128 #ifndef FINAL_VERSION
129 if (soundDebug)
130 {
131 // don't translate. debug only
132 log("Sound event: %08lx %02x\n", address, data);
133 }
134 #endif
135 switch (address)
136 {
137 case NR10:
138 sound1SweepATL = sound1SweepATLReload = 344 * ((data >> 4) & 7);
139 sound1SweepSteps = data & 7;
140 sound1SweepUpDown = data & 0x08;
141 sound1SweepStep = 0;
142 break;
143 case NR11:
144 sound1Wave = soundWavePattern[data >> 6];
145 sound1ATL = 172 * (64 - (data & 0x3f));
146 break;
147 case NR12:
148 sound1EnvelopeVolume = data >> 4;
149 sound1EnvelopeUpDown = data & 0x08;
150 sound1EnvelopeATLReload = sound1EnvelopeATL = 689 * (data & 7);
151 break;
152 case NR13:
153 freq = (((int)(gbMemory[NR14] & 7)) << 8) | data;
154 sound1ATL = 172 * (64 - (gbMemory[NR11] & 0x3f));
155 freq = 2048 - freq;
156 if (freq)
157 {
158 sound1Skip = SOUND_MAGIC / freq;
159 }
160 else
161 sound1Skip = 0;
162 break;
163 case NR14:
164 freq = (((int)(data & 7) << 8) | gbMemory[NR13]);
165 freq = 2048 - freq;
166 sound1ATL = 172 * (64 - (gbMemory[NR11] & 0x3f));
167 sound1Continue = data & 0x40;
168 if (freq)
169 {
170 sound1Skip = SOUND_MAGIC / freq;
171 }
172 else
173 sound1Skip = 0;
174 if (data & 0x80)
175 {
176 gbMemory[NR52] |= 1;
177 sound1EnvelopeVolume = gbMemory[NR12] >> 4;
178 sound1EnvelopeUpDown = gbMemory[NR12] & 0x08;
179 sound1ATL = 172 * (64 - (gbMemory[NR11] & 0x3f));
180 sound1EnvelopeATLReload = sound1EnvelopeATL = 689 * (gbMemory[NR12] & 7);
181 sound1SweepATL = sound1SweepATLReload = 344 * ((gbMemory[NR10] >> 4) & 7);
182 sound1SweepSteps = gbMemory[NR10] & 7;
183 sound1SweepUpDown = gbMemory[NR10] & 0x08;
184 sound1SweepStep = 0;
186 sound1Index = 0;
187 sound1On = 1;
188 }
189 break;
190 case NR21:
191 sound2Wave = soundWavePattern[data >> 6];
192 sound2ATL = 172 * (64 - (data & 0x3f));
193 break;
194 case NR22:
195 sound2EnvelopeVolume = data >> 4;
196 sound2EnvelopeUpDown = data & 0x08;
197 sound2EnvelopeATLReload = sound2EnvelopeATL = 689 * (data & 7);
198 break;
199 case NR23:
200 freq = (((int)(gbMemory[NR24] & 7)) << 8) | data;
201 sound2ATL = 172 * (64 - (gbMemory[NR21] & 0x3f));
202 freq = 2048 - freq;
203 if (freq)
204 {
205 sound2Skip = SOUND_MAGIC / freq;
206 }
207 else
208 sound2Skip = 0;
209 break;
210 case NR24:
211 freq = (((int)(data & 7) << 8) | gbMemory[NR23]);
212 freq = 2048 - freq;
213 sound2ATL = 172 * (64 - (gbMemory[NR21] & 0x3f));
214 sound2Continue = data & 0x40;
215 if (freq)
216 {
217 sound2Skip = SOUND_MAGIC / freq;
218 }
219 else
220 sound2Skip = 0;
221 if (data & 0x80)
222 {
223 gbMemory[NR52] |= 2;
224 sound2EnvelopeVolume = gbMemory[NR22] >> 4;
225 sound2EnvelopeUpDown = gbMemory[NR22] & 0x08;
226 sound2ATL = 172 * (64 - (gbMemory[NR21] & 0x3f));
227 sound2EnvelopeATLReload = sound2EnvelopeATL = 689 * (gbMemory[NR22] & 7);
229 sound2Index = 0;
230 sound2On = 1;
231 }
232 break;
233 case NR30:
234 if (!(data & 0x80))
235 {
236 gbMemory[NR52] &= 0xfb;
237 sound3On = 0;
238 }
239 break;
240 case NR31:
241 sound3ATL = 172 * (256 - data);
242 break;
243 case NR32:
244 sound3OutputLevel = (data >> 5) & 3;
245 break;
246 case NR33:
247 freq = 2048 - (((int)(gbMemory[NR34] & 7) << 8) | data);
248 if (freq)
249 {
250 sound3Skip = SOUND_MAGIC_2 / freq;
251 }
252 else
253 sound3Skip = 0;
254 break;
255 case NR34:
256 freq = 2048 - (((data & 7) << 8) | (int)gbMemory[NR33]);
257 if (freq)
258 {
259 sound3Skip = SOUND_MAGIC_2 / freq;
260 }
261 else
262 {
263 sound3Skip = 0;
264 }
265 sound3Continue = data & 0x40;
266 if ((data & 0x80) && (gbMemory[NR30] & 0x80))
267 {
268 gbMemory[NR52] |= 4;
269 sound3ATL = 172 * (256 - gbMemory[NR31]);
270 sound3Index = 0;
271 sound3On = 1;
272 }
273 break;
274 case NR41:
275 sound4ATL = 172 * (64 - (data & 0x3f));
276 break;
277 case NR42:
278 sound4EnvelopeVolume = data >> 4;
279 sound4EnvelopeUpDown = data & 0x08;
280 sound4EnvelopeATLReload = sound4EnvelopeATL = 689 * (data & 7);
281 break;
282 case NR43:
283 freq = soundFreqRatio[data & 7];
284 sound4NSteps = data & 0x08;
286 sound4Skip = freq * NOISE_MAGIC;
288 sound4Clock = data >> 4;
290 freq = freq / soundShiftClock[sound4Clock];
292 sound4ShiftSkip = freq * NOISE_MAGIC;
294 break;
295 case NR44:
296 sound4Continue = data & 0x40;
297 if (data & 0x80)
298 {
299 gbMemory[NR52] |= 8;
300 sound4EnvelopeVolume = gbMemory[NR42] >> 4;
301 sound4EnvelopeUpDown = gbMemory[NR42] & 0x08;
302 sound4ATL = 172 * (64 - (gbMemory[NR41] & 0x3f));
303 sound4EnvelopeATLReload = sound4EnvelopeATL = 689 * (gbMemory[NR42] & 7);
305 sound4On = 1;
307 sound4Index = 0;
308 sound4ShiftIndex = 0;
310 freq = soundFreqRatio[gbMemory[NR43] & 7];
312 sound4Skip = freq * NOISE_MAGIC;
314 sound4NSteps = gbMemory[NR43] & 0x08;
316 freq = freq / soundShiftClock[gbMemory[NR43] >> 4];
318 sound4ShiftSkip = freq * NOISE_MAGIC;
319 if (sound4NSteps)
320 sound4ShiftRight = 0x7f;
321 else
322 sound4ShiftRight = 0x7fff;
323 }
324 break;
325 case NR50:
326 soundVIN = data & 0x88;
327 soundLevel1 = data & 7;
328 soundLevel2 = (data >> 4) & 7;
329 break;
330 case NR51:
331 soundBalance = (data & soundEnableFlag);
332 gbMemory[address] = data;
333 break;
334 case NR52:
335 soundMasterOn = data & 0x80;
336 if (!(data & 0x80))
337 {
338 sound1On = 0;
339 sound2On = 0;
340 sound3On = 0;
341 sound4On = 0;
342 }
343 break;
344 }
346 gbDigitalSound = true;
348 if (sound1On && sound1EnvelopeVolume != 0)
349 gbDigitalSound = false;
350 if (sound2On && sound2EnvelopeVolume != 0)
351 gbDigitalSound = false;
352 if (sound3On && sound3OutputLevel != 0)
353 gbDigitalSound = false;
354 if (sound4On && sound4EnvelopeVolume != 0)
355 gbDigitalSound = false;
356 }
358 void gbSoundChannel1()
359 {
360 int vol = sound1EnvelopeVolume;
362 int freq = 0;
364 int value = 0;
366 if (sound1On && (sound1ATL || !sound1Continue))
367 {
368 sound1Index += soundQuality * sound1Skip;
369 sound1Index &= 0x1fffffff;
371 value = ((s8)sound1Wave[sound1Index >> 24]) * vol;
372 }
374 soundBuffer[0][soundIndex] = value;
376 if (sound1On)
377 {
378 if (sound1ATL)
379 {
380 sound1ATL -= soundQuality;
382 if (sound1ATL <= 0 && sound1Continue)
383 {
384 gbMemory[NR52] &= 0xfe;
385 sound1On = 0;
386 }
387 }
389 if (sound1EnvelopeATL)
390 {
391 sound1EnvelopeATL -= soundQuality;
393 if (sound1EnvelopeATL <= 0)
394 {
395 if (sound1EnvelopeUpDown)
396 {
397 if (sound1EnvelopeVolume < 15)
398 sound1EnvelopeVolume++;
399 }
400 else
401 {
402 if (sound1EnvelopeVolume)
403 sound1EnvelopeVolume--;
404 }
406 sound1EnvelopeATL += sound1EnvelopeATLReload;
407 }
408 }
410 if (sound1SweepATL)
411 {
412 sound1SweepATL -= soundQuality;
414 if (sound1SweepATL <= 0)
415 {
416 freq = (((int)(gbMemory[NR14] & 7) << 8) | gbMemory[NR13]);
418 int updown = 1;
420 if (sound1SweepUpDown)
421 updown = -1;
423 int newfreq = 0;
424 if (sound1SweepSteps)
425 {
426 newfreq = freq + updown * freq / (1 << sound1SweepSteps);
427 if (newfreq == freq)
428 newfreq = 0;
429 }
430 else
431 newfreq = freq;
433 if (newfreq < 0)
434 {
435 sound1SweepATL += sound1SweepATLReload;
436 }
437 else if (newfreq > 2047)
438 {
439 sound1SweepATL = 0;
440 sound1On = 0;
441 gbMemory[NR52] &= 0xfe;
442 }
443 else
444 {
445 sound1SweepATL += sound1SweepATLReload;
446 sound1Skip = SOUND_MAGIC / (2048 - newfreq);
448 gbMemory[NR13] = newfreq & 0xff;
449 gbMemory[NR14] = (gbMemory[NR14] & 0xf8) | ((newfreq >> 8) & 7);
450 }
451 }
452 }
453 }
454 }
456 void gbSoundChannel2()
457 {
458 // int freq = 0;
459 int vol = sound2EnvelopeVolume;
461 int value = 0;
463 if (sound2On && (sound2ATL || !sound2Continue))
464 {
465 sound2Index += soundQuality * sound2Skip;
466 sound2Index &= 0x1fffffff;
468 value = ((s8)sound2Wave[sound2Index >> 24]) * vol;
469 }
471 soundBuffer[1][soundIndex] = value;
473 if (sound2On)
474 {
475 if (sound2ATL)
476 {
477 sound2ATL -= soundQuality;
479 if (sound2ATL <= 0 && sound2Continue)
480 {
481 gbMemory[NR52] &= 0xfd;
482 sound2On = 0;
483 }
484 }
486 if (sound2EnvelopeATL)
487 {
488 sound2EnvelopeATL -= soundQuality;
490 if (sound2EnvelopeATL <= 0)
491 {
492 if (sound2EnvelopeUpDown)
493 {
494 if (sound2EnvelopeVolume < 15)
495 sound2EnvelopeVolume++;
496 }
497 else
498 {
499 if (sound2EnvelopeVolume)
500 sound2EnvelopeVolume--;
501 }
502 sound2EnvelopeATL += sound2EnvelopeATLReload;
503 }
504 }
505 }
506 }
508 void gbSoundChannel3()
509 {
510 int value = sound3Last;
512 if (sound3On && (sound3ATL || !sound3Continue))
513 {
514 sound3Index += soundQuality * sound3Skip;
515 sound3Index &= 0x1fffffff;
517 value = gbMemory[0xff30 + (sound3Index >> 25)];
519 if ((sound3Index & 0x01000000))
520 {
521 value &= 0x0f;
522 }
523 else
524 {
525 value >>= 4;
526 }
528 value -= 8;
529 value *= 2;
531 switch (sound3OutputLevel)
532 {
533 case 0:
534 value = 0;
535 break;
536 case 1:
537 break;
538 case 2:
539 value = (value >> 1);
540 break;
541 case 3:
542 value = (value >> 2);
543 break;
544 }
545 //value += 1;
546 sound3Last = value;
547 }
549 soundBuffer[2][soundIndex] = value;
551 if (sound3On)
552 {
553 if (sound3ATL)
554 {
555 sound3ATL -= soundQuality;
557 if (sound3ATL <= 0 && sound3Continue)
558 {
559 gbMemory[NR52] &= 0xfb;
560 sound3On = 0;
561 }
562 }
563 }
564 }
566 void gbSoundChannel4()
567 {
568 int vol = sound4EnvelopeVolume;
570 int value = 0;
572 if (sound4Clock <= 0x0c)
573 {
574 if (sound4On && (sound4ATL || !sound4Continue))
575 {
576 #define NOISE_ONE_SAMP_SCALE 0x200000
578 sound4Index += soundQuality * sound4Skip;
579 sound4ShiftIndex += soundQuality * sound4ShiftSkip;
581 if (sound4NSteps)
582 {
583 while (sound4ShiftIndex >= NOISE_ONE_SAMP_SCALE)
584 {
585 sound4ShiftRight = (((sound4ShiftRight << 6) ^
586 (sound4ShiftRight << 5)) & 0x40) |
587 (sound4ShiftRight >> 1);
588 sound4ShiftIndex -= NOISE_ONE_SAMP_SCALE;
589 }
590 }
591 else
592 {
593 while (sound4ShiftIndex >= NOISE_ONE_SAMP_SCALE)
594 {
595 sound4ShiftRight = (((sound4ShiftRight << 14) ^
596 (sound4ShiftRight << 13)) & 0x4000) |
597 (sound4ShiftRight >> 1);
599 sound4ShiftIndex -= NOISE_ONE_SAMP_SCALE;
600 }
601 }
603 sound4Index %= NOISE_ONE_SAMP_SCALE;
604 sound4ShiftIndex %= NOISE_ONE_SAMP_SCALE;
606 value = ((sound4ShiftRight & 1) * 2 - 1) * vol;
607 }
608 else
609 {
610 value = 0;
611 }
612 }
614 soundBuffer[3][soundIndex] = value;
616 if (sound4On)
617 {
618 if (sound4ATL)
619 {
620 sound4ATL -= soundQuality;
622 if (sound4ATL <= 0 && sound4Continue)
623 {
624 gbMemory[NR52] &= 0xfd;
625 sound4On = 0;
626 }
627 }
629 if (sound4EnvelopeATL)
630 {
631 sound4EnvelopeATL -= soundQuality;
633 if (sound4EnvelopeATL <= 0)
634 {
635 if (sound4EnvelopeUpDown)
636 {
637 if (sound4EnvelopeVolume < 15)
638 sound4EnvelopeVolume++;
639 }
640 else
641 {
642 if (sound4EnvelopeVolume)
643 sound4EnvelopeVolume--;
644 }
645 sound4EnvelopeATL += sound4EnvelopeATLReload;
646 }
647 }
648 }
649 }
651 void gbSoundMix()
652 {
653 int res = 0;
655 if (gbMemory)
656 soundBalance = (gbMemory[NR51] & soundEnableFlag & ~soundMutedFlag);
658 if (soundBalance & 16)
659 {
660 res += ((s8)soundBuffer[0][soundIndex]);
661 }
662 if (soundBalance & 32)
663 {
664 res += ((s8)soundBuffer[1][soundIndex]);
665 }
666 if (soundBalance & 64)
667 {
668 res += ((s8)soundBuffer[2][soundIndex]);
669 }
670 if (soundBalance & 128)
671 {
672 res += ((s8)soundBuffer[3][soundIndex]);
673 }
675 if (gbDigitalSound)
676 res = soundLevel1 * 256;
677 else
678 res *= soundLevel1 * 60;
680 if (soundEcho)
681 {
682 res *= 2;
683 res += soundFilter[soundEchoIndex];
684 res /= 2;
685 soundFilter[soundEchoIndex++] = res;
686 }
688 if (soundLowPass)
689 {
690 soundLeft[4] = soundLeft[3];
691 soundLeft[3] = soundLeft[2];
692 soundLeft[2] = soundLeft[1];
693 soundLeft[1] = soundLeft[0];
694 soundLeft[0] = res;
695 res = (soundLeft[4] + 2 * soundLeft[3] + 8 * soundLeft[2] + 2 * soundLeft[1] +
696 soundLeft[0]) / 14;
697 }
699 bool noSpecialEffects = false;
700 #if (defined(WIN32) && !defined(SDL))
701 if (theApp.soundRecording || theApp.aviRecording || theApp.nvAudioLog)
702 noSpecialEffects = true;
703 #endif
705 if (!noSpecialEffects)
706 {
707 switch (soundVolume)
708 {
709 case 0:
710 case 1:
711 case 2:
712 case 3:
713 res *= (soundVolume + 1);
714 break;
715 case 4:
716 res >>= 2;
717 break;
718 case 5:
719 res >>= 1;
720 break;
721 }
722 }
724 if (res > 32767)
725 res = 32767;
726 if (res < -32768)
727 res = -32768;
729 if (soundReverse && !noSpecialEffects)
730 {
731 soundFinalWave[++soundBufferIndex] = res;
732 if ((soundFrameSoundWritten + 1) >= countof(soundFrameSound))
734 ; //printf("oh noes!\n");
735 else
736 soundFrameSound[++soundFrameSoundWritten] = res;
737 }
738 else
739 {
740 soundFinalWave[soundBufferIndex++] = res;
741 if (soundFrameSoundWritten >= countof(soundFrameSound))
742 ; //printf("oh noes!\n");
743 else
744 soundFrameSound[soundFrameSoundWritten++] = res;
745 }
747 res = 0;
749 if (soundBalance & 1)
750 {
751 res += ((s8)soundBuffer[0][soundIndex]);
752 }
753 if (soundBalance & 2)
754 {
755 res += ((s8)soundBuffer[1][soundIndex]);
756 }
757 if (soundBalance & 4)
758 {
759 res += ((s8)soundBuffer[2][soundIndex]);
760 }
761 if (soundBalance & 8)
762 {
763 res += ((s8)soundBuffer[3][soundIndex]);
764 }
766 if (gbDigitalSound)
767 res = soundLevel2 * 256;
768 else
769 res *= soundLevel2 * 60;
771 if (soundEcho)
772 {
773 res *= 2;
774 res += soundFilter[soundEchoIndex];
775 res /= 2;
776 soundFilter[soundEchoIndex++] = res;
778 if (soundEchoIndex >= 4000)
779 soundEchoIndex = 0;
780 }
782 if (soundLowPass)
783 {
784 soundRight[4] = soundRight[3];
785 soundRight[3] = soundRight[2];
786 soundRight[2] = soundRight[1];
787 soundRight[1] = soundRight[0];
788 soundRight[0] = res;
789 res = (soundRight[4] + 2 * soundRight[3] + 8 * soundRight[2] + 2 * soundRight[1] +
790 soundRight[0]) / 14;
791 }
793 if (!noSpecialEffects)
794 {
795 switch (soundVolume)
796 {
797 case 0:
798 case 1:
799 case 2:
800 case 3:
801 res *= (soundVolume + 1);
802 break;
803 case 4:
804 res >>= 2;
805 break;
806 case 5:
807 res >>= 1;
808 break;
809 }
810 }
812 if (res > 32767)
813 res = 32767;
814 if (res < -32768)
815 res = -32768;
817 if (soundReverse && !noSpecialEffects)
818 {
819 soundFinalWave[-1 + soundBufferIndex++] = res;
820 if ((soundFrameSoundWritten) >= countof(soundFrameSound))
821 ;//printf("oh noes!\n");
822 else
823 soundFrameSound[-1 + soundFrameSoundWritten++] = res;
824 }
825 else
826 {
827 soundFinalWave[soundBufferIndex++] = res;
828 if ((soundFrameSoundWritten + 1) >= countof(soundFrameSound))
829 ;//printf("oh noes!\n");
830 else
831 soundFrameSound[soundFrameSoundWritten++] = res;
832 }
833 }
835 void gbSoundTick()
836 {
837 if (systemSoundOn)
838 {
839 if (soundMasterOn)
840 {
841 gbSoundChannel1();
842 gbSoundChannel2();
843 gbSoundChannel3();
844 gbSoundChannel4();
846 gbSoundMix();
847 }
848 else
849 {
850 soundFinalWave[soundBufferIndex++] = 0;
851 soundFinalWave[soundBufferIndex++] = 0;
852 if ((soundFrameSoundWritten + 1) >= countof(soundFrameSound))
854 ;//printf("oh noes!\n");
855 else
856 {
857 soundFrameSound[soundFrameSoundWritten++] = 0;
858 soundFrameSound[soundFrameSoundWritten++] = 0;
859 }
860 }
862 soundIndex++;
864 if (2 * soundBufferIndex >= soundBufferLen)
865 {
866 if (systemSoundOn)
867 {
868 if (soundPaused)
869 {
870 extern void soundResume();
871 soundResume();
872 }
874 systemSoundWriteToBuffer();
875 }
876 soundIndex = 0;
877 soundBufferIndex = 0;
878 }
879 }
880 }
882 void gbSoundReset()
883 {
884 soundPaused = 1;
885 soundPlay = 0;
886 SOUND_CLOCK_TICKS = soundQuality * GB_USE_TICKS_AS;
887 // soundTicks = SOUND_CLOCK_TICKS;
888 soundTicks = 0;
889 soundNextPosition = 0;
890 soundMasterOn = 1;
891 soundIndex = 0;
892 soundBufferIndex = 0;
893 soundLevel1 = 7;
894 soundLevel2 = 7;
895 soundVIN = 0;
897 sound1On = 0;
898 sound1ATL = 0;
899 sound1Skip = 0;
900 sound1Index = 0;
901 sound1Continue = 0;
902 sound1EnvelopeVolume = 0;
903 sound1EnvelopeATL = 0;
904 sound1EnvelopeUpDown = 0;
905 sound1EnvelopeATLReload = 0;
906 sound1SweepATL = 0;
907 sound1SweepATLReload = 0;
908 sound1SweepSteps = 0;
909 sound1SweepUpDown = 0;
910 sound1SweepStep = 0;
911 sound1Wave = soundWavePattern[2];
913 sound2On = 0;
914 sound2ATL = 0;
915 sound2Skip = 0;
916 sound2Index = 0;
917 sound2Continue = 0;
918 sound2EnvelopeVolume = 0;
919 sound2EnvelopeATL = 0;
920 sound2EnvelopeUpDown = 0;
921 sound2EnvelopeATLReload = 0;
922 sound2Wave = soundWavePattern[2];
924 sound3On = 0;
925 sound3ATL = 0;
926 sound3Skip = 0;
927 sound3Index = 0;
928 sound3Continue = 0;
929 sound3OutputLevel = 0;
931 sound4On = 0;
932 sound4Clock = 0;
933 sound4ATL = 0;
934 sound4Skip = 0;
935 sound4Index = 0;
936 sound4ShiftRight = 0x7f;
937 sound4NSteps = 0;
938 sound4CountDown = 0;
939 sound4Continue = 0;
940 sound4EnvelopeVolume = 0;
941 sound4EnvelopeATL = 0;
942 sound4EnvelopeUpDown = 0;
943 sound4EnvelopeATLReload = 0;
945 // don't translate
946 if (soundDebug)
947 {
948 log("*** Sound Init ***\n");
949 }
951 gbSoundEvent(0xff10, 0x80);
952 gbSoundEvent(0xff11, 0xbf);
953 gbSoundEvent(0xff12, 0xf3);
954 gbSoundEvent(0xff14, 0xbf);
955 gbSoundEvent(0xff16, 0x3f);
956 gbSoundEvent(0xff17, 0x00);
957 gbSoundEvent(0xff19, 0xbf);
959 gbSoundEvent(0xff1a, 0x7f);
960 gbSoundEvent(0xff1b, 0xff);
961 gbSoundEvent(0xff1c, 0xbf);
962 gbSoundEvent(0xff1e, 0xbf);
964 gbSoundEvent(0xff20, 0xff);
965 gbSoundEvent(0xff21, 0x00);
966 gbSoundEvent(0xff22, 0x00);
967 gbSoundEvent(0xff23, 0xbf);
968 gbSoundEvent(0xff24, 0x77);
969 gbSoundEvent(0xff25, 0xf3);
971 gbSoundEvent(0xff26, 0xf0);
973 // don't translate
974 if (soundDebug)
975 {
976 log("*** Sound Init Complete ***\n");
977 }
979 sound1On = 0;
980 sound2On = 0;
981 sound3On = 0;
982 sound4On = 0;
984 int addr = 0xff30;
986 while (addr < 0xff40)
987 {
988 gbMemory[addr++] = 0x00;
989 gbMemory[addr++] = 0xff;
990 }
992 memset(soundFinalWave, 0x00, soundBufferLen);
994 memset(soundFilter, 0, sizeof(soundFilter));
995 soundEchoIndex = 0;
996 }
998 extern bool soundInit();
999 extern void soundShutdown();
1001 void gbSoundSetQuality(int quality)
1003 if (soundQuality != quality && systemSoundCanChangeQuality())
1005 if (!soundOffFlag)
1006 soundShutdown();
1007 soundQuality = quality;
1008 soundNextPosition = 0;
1009 if (!soundOffFlag)
1010 soundInit();
1011 SOUND_CLOCK_TICKS = (gbSpeed ? 2 : 1) * GB_USE_TICKS_AS * soundQuality;
1012 soundIndex = 0;
1013 soundBufferIndex = 0;
1015 else
1017 soundNextPosition = 0;
1018 SOUND_CLOCK_TICKS = (gbSpeed ? 2 : 1) * GB_USE_TICKS_AS * soundQuality;
1019 soundIndex = 0;
1020 soundBufferIndex = 0;
1024 static int32 soundTicks_int32;
1025 static int32 SOUND_CLOCK_TICKS_int32;
1026 variable_desc gbSoundSaveStruct[] = {
1027 { &soundPaused, sizeof(int32) },
1028 { &soundPlay, sizeof(int32) },
1029 { &soundTicks_int32, sizeof(int32) },
1030 { &SOUND_CLOCK_TICKS_int32, sizeof(int32) },
1031 { &soundLevel1, sizeof(int32) },
1032 { &soundLevel2, sizeof(int32) },
1033 { &soundBalance, sizeof(int32) },
1034 { &soundMasterOn, sizeof(int32) },
1035 { &soundIndex, sizeof(int32) },
1036 { &soundVIN, sizeof(int32) },
1037 { &sound1On, sizeof(int32) },
1038 { &sound1ATL, sizeof(int32) },
1039 { &sound1Skip, sizeof(int32) },
1040 { &sound1Index, sizeof(int32) },
1041 { &sound1Continue, sizeof(int32) },
1042 { &sound1EnvelopeVolume, sizeof(int32) },
1043 { &sound1EnvelopeATL, sizeof(int32) },
1044 { &sound1EnvelopeATLReload, sizeof(int32) },
1045 { &sound1EnvelopeUpDown, sizeof(int32) },
1046 { &sound1SweepATL, sizeof(int32) },
1047 { &sound1SweepATLReload, sizeof(int32) },
1048 { &sound1SweepSteps, sizeof(int32) },
1049 { &sound1SweepUpDown, sizeof(int32) },
1050 { &sound1SweepStep, sizeof(int32) },
1051 { &sound2On, sizeof(int32) },
1052 { &sound2ATL, sizeof(int32) },
1053 { &sound2Skip, sizeof(int32) },
1054 { &sound2Index, sizeof(int32) },
1055 { &sound2Continue, sizeof(int32) },
1056 { &sound2EnvelopeVolume, sizeof(int32) },
1057 { &sound2EnvelopeATL, sizeof(int32) },
1058 { &sound2EnvelopeATLReload, sizeof(int32) },
1059 { &sound2EnvelopeUpDown, sizeof(int32) },
1060 { &sound3On, sizeof(int32) },
1061 { &sound3ATL, sizeof(int32) },
1062 { &sound3Skip, sizeof(int32) },
1063 { &sound3Index, sizeof(int32) },
1064 { &sound3Continue, sizeof(int32) },
1065 { &sound3OutputLevel, sizeof(int32) },
1066 { &sound4On, sizeof(int32) },
1067 { &sound4ATL, sizeof(int32) },
1068 { &sound4Skip, sizeof(int32) },
1069 { &sound4Index, sizeof(int32) },
1070 { &sound4Clock, sizeof(int32) },
1071 { &sound4ShiftRight, sizeof(int32) },
1072 { &sound4ShiftSkip, sizeof(int32) },
1073 { &sound4ShiftIndex, sizeof(int32) },
1074 { &sound4NSteps, sizeof(int32) },
1075 { &sound4CountDown, sizeof(int32) },
1076 { &sound4Continue, sizeof(int32) },
1077 { &sound4EnvelopeVolume, sizeof(int32) },
1078 { &sound4EnvelopeATL, sizeof(int32) },
1079 { &sound4EnvelopeATLReload, sizeof(int32) },
1080 { &sound4EnvelopeUpDown, sizeof(int32) },
1081 { &soundEnableFlag, sizeof(int32) },
1082 { NULL, 0 }
1083 };
1085 //variable_desc gbSoundSaveStructV2[] = {
1086 // { &soundTicks, sizeof(soundtick_t) },
1087 // { &SOUND_CLOCK_TICKS, sizeof(soundtick_t) },
1088 // { &GB_USE_TICKS_AS, sizeof(soundtick_t) },
1089 // { NULL, 0 }
1090 //};
1092 void gbSoundSaveGame(gzFile gzFile)
1094 soundTicks_int32 = (int32) soundTicks;
1095 SOUND_CLOCK_TICKS_int32 = (int32) SOUND_CLOCK_TICKS;
1097 utilWriteData(gzFile, gbSoundSaveStruct);
1099 utilGzWrite(gzFile, soundBuffer, 4 * 735);
1100 utilGzWrite(gzFile, soundFinalWave, 2 * 735);
1101 utilGzWrite(gzFile, &soundQuality, sizeof(int32));
1103 //utilWriteData(gzFile, gbSoundSaveStructV2);
1106 void gbSoundReadGame(int version, gzFile gzFile)
1108 int32 oldSoundPaused = soundPaused;
1109 int32 oldSoundEnableFlag = soundEnableFlag;
1110 utilReadData(gzFile, gbSoundSaveStruct);
1111 soundPaused = oldSoundPaused;
1112 soundEnableFlag = oldSoundEnableFlag;
1114 soundBufferIndex = soundIndex * 2;
1116 utilGzRead(gzFile, soundBuffer, 4 * 735);
1117 utilGzRead(gzFile, soundFinalWave, 2 * 735);
1119 if (version >= 7)
1121 int quality = 1;
1122 utilGzRead(gzFile, &quality, sizeof(int32));
1123 gbSoundSetQuality(quality);
1125 else
1127 soundQuality = -1;
1128 gbSoundSetQuality(1);
1131 sound1Wave = soundWavePattern[gbMemory[NR11] >> 6];
1132 sound2Wave = soundWavePattern[gbMemory[NR21] >> 6];
1134 //if(version >= 14) {
1135 // utilReadData(gzFile, gbSoundSaveStructV2);
1136 //}
1137 //else {
1138 soundTicks = (soundtick_t) soundTicks_int32;
1139 SOUND_CLOCK_TICKS = (soundtick_t) SOUND_CLOCK_TICKS_int32;
1140 //}